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Electrode, power storage device, electronic device, and manufacturing method of electrode

a technology of power storage device and electrode, applied in the direction of sustainable manufacturing/processing, cell components, climate sustainability, etc., can solve the problems of secondary lithium ion, achieve excellent charging and discharging characteristics, prevent the reduction of the capacity of charge and discharge cycle, and high degree of safety

Inactive Publication Date: 2019-04-09
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a power storage device with excellent charging and discharging characteristics. It prevents a decrease in capacity in charge and discharge cycles. It has a high degree of safety or high reliability. It increases the capacity per volume and / or weight of a power storage device and its electrodes. It causes a battery reaction stably at a high potential in a positive electrode containing a positive electrode active material. It fabricates an electrode with a uniform thickness.

Problems solved by technology

Development of lithium ion secondary batteries is susceptible to improvement in terms of charge and discharge characteristics, cycle characteristics, reliability, safety, cost, and the like.

Method used

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  • Electrode, power storage device, electronic device, and manufacturing method of electrode
  • Electrode, power storage device, electronic device, and manufacturing method of electrode
  • Electrode, power storage device, electronic device, and manufacturing method of electrode

Examples

Experimental program
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embodiment 1

(Embodiment 1)

[0073]In this embodiment, an electrode of one embodiment of the present invention is described with reference to FIGS. 1A to 1D.

[0074]In this embodiment, an example in which an electrode of one embodiment of the present invention is applied to a lithium ion secondary battery is described; however, the use of an electrode of one embodiment of the present invention is not limited to this. An electrode of one embodiment of the present invention can be applied to any of a battery, a primary battery, a secondary battery, a lithium air battery, a lead storage battery, a lithium ion polymer secondary battery, a nickel-hydrogen storage battery, a nickel-cadmium storage battery, a nickel-iron storage battery, a nickel-zinc storage battery, a silver oxide-zinc storage battery, a solid-state battery, an air cell, a zinc-air battery, a capacitor, a lithium ion capacitor, an electric double layer capacitor, an ultracapacitor, a supercapacitor, and the like.

[0075]An electrode of one...

embodiment 2

(Embodiment 2)

[0161]In this embodiment, an active material that can be used for the electrode of one embodiment of the present invention is described with reference to FIGS. 2A and 2B, FIG. 3, FIGS. 4A and 4B, and FIG. 5.

[0162]Note that an active material generally refers only to a material that is involved in intercalation and deintercalation of ions functioning as carriers; however, an active material described in this specification and the like also includes a layer (coating layer) that covers an “active material” in some cases.

[0163]In this embodiment, a “particle containing a lithium manganese complex oxide” that can be used for an active material and a manufacturing method thereof will be described.

[0164]A lithium manganese complex oxide is strongly basic. For its resistance to a base, polybenzoxazine can be favorably used as a binder in the case where an active material is formed using a lithium manganese complex oxide.

[0165]When the electrode including the active material de...

embodiment 3

(Embodiment 3)

[0267]In this embodiment, a variety of modes of the power storage device of one embodiment of the present invention are described with reference to FIGS. 6A to 6C, FIGS. 7A and 7B, FIGS. 8A and 8B, FIG. 9, FIGS. 10A and 10B, FIGS. 11A to 11C, FIG. 12, FIGS. 13A and 13B, FIGS. 14A and 14B, FIGS. 15A and 15B, FIGS. 16A and 16B, FIGS. 17A to 17C, FIGS. 18A and 18B, FIGS. 19A1, 19A2, 19B1, and 19B2, and FIGS. 20A and 20B. Note that the power storage device of one embodiment of the present invention is not limited to the structures described in this embodiment, and various shapes and modes can be used.

[0268]Although a lithium ion secondary battery is described as an example in this embodiment, the power storage device of one embodiment of the present invention is not limited to this example.

[0269]The power storage device in this embodiment includes a pair of electrodes (a positive electrode and a negative electrode), and the pair of electrodes each include an active materia...

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Abstract

A power storage device with excellent charge and discharge characteristics. A power storage device in which a decrease in capacity in charge and discharge cycles is inhibited. An electrode which includes a current collector and an active material layer and in which the active material layer includes an active material and a binder and the binder includes polybenzoxazine. An electrode that includes polybenzoxazine and another material as a binder. A basic material may be used as the active material. The electrode may be formed under high temperatures.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]One embodiment of the present invention relates to an electrode, a power storage device, an electronic device, and a method for manufacturing any of them.[0003]Note that one embodiment of the present invention is not limited to the above technical field. Examples of the technical field of one embodiment of the present invention include a semiconductor device, a display device, a light-emitting device, a power storage device, a memory device, an imaging device, a method for driving any of them, and a method for manufacturing any of them.[0004]In this specification, the power storage device is a collective term describing units and devices having a power storage function. For example, a storage battery such as a lithium-ion secondary battery (also referred to as secondary battery), a lithium-ion capacitor, and an electric double layer capacitor are included in the category of the power storage device.[0005]2. Description ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H01M4/62H01M4/36H01M10/0525H01G11/48H01G11/50H01G11/30H01M4/505H01G11/46H01M4/1391H01M4/583
CPCH01M4/622H01G11/30H01G11/46H01G11/50H01M4/366H01M4/623H01M4/505Y02E60/13H01G11/48H01M4/1391H01M4/583Y02P70/50
Inventor OCHIAI, TERUAKIKAWAKAMI, TAKAHIRO
Owner SEMICON ENERGY LAB CO LTD